"We continue to see very strong interest and use [among firms using Notes or Foundations,]" he said in an email. "In a recent survey of Notes customers, [approximately] 25 percent of them are either evaluating or deploying Lotus Symphony."

Symphony now limits users to saving files into Office 2003 or Office 2000's document formats. But the spokesman said saving in Office 2007 format was not off the table. "We will continue to monitor the demand for this function and based on that demand respond as needed," he said.